JPH06248775A - Wall facing material with adhesive rubber sheet - Google Patents

Abstract

PURPOSE:To facilitate the construction work of wall facing material and prevent a swelling accident generated to the backing material and wall facing material by attaching a permeable net to the back face of the wall facing material with an adhesive rubber sheet attached thereto. CONSTITUTION:An adhesive rubber sheet is formed by kneading tackifying resin, a softener, an antioxidant and a color pigment in natural rubber as a main component and forming the kneaded material into thickness of about 0.5mm-2.0mm, and one face of this adhesive rubber sheet is attached to wall facing material. In order to provide the adhesive rubber sheet with permeability, a net with permeability formed in two, three and four axes of flat synthetic fiber of about 200-2000 denier in thickness and about 5-50mm in roughness formed by twisting several filaments is attached to obtain a net combined adhesive rubber sheet. This results in preventing a swelling accident caused by the aged deterioration of the backing material and wall facing material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a non-vulcanized adhesive butyl rubber sheet laminated on the back surface, and prevents swelling after application of a wall covering material capable of finishing the exterior of a building due to the adhesive strength of the material. Regarding

[0002]

2. Description of the Related Art In recent years, a method of using an adhesive rubber sheet as an adhesive layer has been attempted as a wall covering material for buildings. That is, a stone material paint is sprayed on one side of the adhesive rubber sheet, a film printed on the pattern of marble or granite is stuck, or a scale-like strip of colored paint is spread on one side of the adhesive rubber sheet and fixed. Many of them are seen in granite.

When a wall covering laminated with a non-vulcanized butyl rubber sheet is attached to an outer wall of a building, the outer wall of the building is previously
Simply apply the primer to the entire surface, flip off the release paper on the other side of the adhesive rubber sheet, and apply it from one end of the wall covering while pressing it so that it does not entrap air in sequence. However, it has become popular because it has the advantage that stone-like wall surfaces can be easily finished even if you are not a professional. However, in general, it seems that no abnormalities appear in the appearance when the construction is completed.However, after a few months after the construction, the solvent and water contained in the weak adhesive force, the primer, and the bubbles in the primer grow over time. Blistering may be a serious problem.

[0004]

[Means for Solving the Problem] As a result of intensive studies, the present inventors have found out the following. That is, in the construction of this kind of wall covering material, it is unavoidable that air is entrapped between the adhesive rubber sheet and the base layer, and in the summer, the air layer expands and softens to give a finished surface and an adhesive rubber. Swelling occurs by pushing up the sheet. Therefore, it was found that swelling does not occur if an air-permeable layer is provided on the pressure-sensitive adhesive rubber sheet to allow the expanding air to escape to the outside or to diffuse to the entire adhesive interface to prevent partial stress concentration. As a result of further research, they found that it was effective to attach a breathable net, which is a bundle of twisted yarns and filaments, to an adhesive rubber sheet.

The present invention was made on the basis of the above-mentioned findings, and a decorative layer serving as a finishing surface is provided on one side of an adhesive rubber sheet, and a swelling prevention formed by laminating a net and release paper on the other side. A functional wall covering is provided.

The adhesive rubber sheet of the present invention contains natural rubber or synthetic rubber as a main component, an adhesion-imparting resin such as polybutene or petroleum resin, a softening agent such as process oil, a filler, an antioxidant, a coloring pigment, or the like. Is blended, kneaded, and molded into a sheet. The thickness of the adhesive rubber sheet is 0.1 mm ~
3.0 mm, particularly preferably 0.5 mm to 2.0 mm. If it is too thin, it tends to be difficult to follow the fine irregularities of the underlayer and the adhesiveness tends to deteriorate, while if it is too thick, it results in an increase in weight and cost.

The net of the present invention is obtained by twisting or bundling several filaments and has a thickness of 200 to 2000.
Made from synthetic fibers such as denier, polyester with a mesh of 5 to 50 mm, nylon, vinylon, polypropylene, polyethylene, polyurethane, and glass fibers, and 2
Axial, triaxial and quadriaxial nets can be used.

The shape of the thread is preferably flat, and round or rod-like ones are buried in the adhesive rubber sheet layer to reduce the action as a ventilation layer, or the net eyes are finished through the adhesive rubber sheet to finish the surface. It may appear even in layers and may damage the aesthetics.

If the thickness of the thread is too thin, not only the air permeability will not be sufficiently obtained, but it will also be buried in the adhesive rubber sheet layer with the lapse of time, and there will be no effect of letting air present at the adhesive interface escape. . On the other hand, if it is too thick, the air passage can be sufficiently secured, but there is a risk that the adhesion area to the base is unnecessarily reduced.

If the mesh roughness is too small, the adhesion area will be insufficient, and the risk of peeling or falling off after construction will increase. On the other hand, if it is too large, the entrained air may not come into contact with the yarn, and swelling cannot be prevented. Examples of the present invention will be shown below. (All compounding ratios are weight percentages.)

[0011]

【Example】

Example 1 Butyl rubber 25, recycled butyl rubber 12, polybutene 8,
Petroleum resin 8, process oil 4, calcium carbonate 42.
6. Knead kneader 0.4 anti-aging agent, then reverse L
A calender roll machine was used to obtain an adhesive non-vulcanized butyl rubber sheet having a thickness of 1 mm. One side of this sheet has a thickness of 1
A polyester net (made by Nitto Boseki Co., Ltd., triaxial net) having a mesh size of 000 denier and a mesh size of 20 mm was attached, and release paper was applied from above. On the other hand, on the other side, styrene acrylic copolymer emulsion 45, polycarboxylic acid type dispersant 2.2, thickener (4% hydroxyethyl cellulose aqueous solution) 2.6, defoamer (manufactured by San Nopco, trade name: Nopco NXZ) 0.2, calcium carbonate 10, colored aggregate (porcelain powder, white, 40 mesh) 30, colored aggregate (porcelain powder, black, 20 mesh) 10 1 stone square paint obtained Sprayed at a rate of 2.0 to 2.5 Kg, cured and dried. A swelling reproducibility test was performed as follows. That is, 200X20
0x5mm thick glass plate with 150X of the above wall covering
It was cut into a size of 150 mm and attached. At this time, the center of the wall covering material was not intentionally pressed so as to form a gap with the glass plate in a size of about 40 × 40 mm, and the other part was sufficiently pressed by applying a rubber roller. This was stood vertically in an oven at 80 ° C., left for 15 hours and then taken out to observe swelling. The results are summarized in Table 1.

Example 2 Using the same adhesive rubber sheet as in Example 1, a nylon net (made by Asahi Woven Co., Ltd., biaxial braid) having a thickness of 1000 denier and a mesh size of 10 mm was used on one side. paste,
I applied release paper from above. On the other hand, a 50-micron-thick polyester film on which a natural stone pattern was gravure printed was attached to the other surface. A swelling reproduction test was conducted in the same manner as in Example 1. The results are summarized in Table 1
Shown in.

Example 3 Using the same adhesive rubber sheet as used in Example 1, a glass net (made by Kurashiki Spinning Co., Ltd., biaxial net) having a thickness of 600 denier and a mesh size of 10 mm was attached to one surface thereof. , I applied the release paper. On the other hand, on the other surface, 3-5 mm scale-like coating film strips colored in white and black were spread at a ratio of 3: 1 by weight, and an acrylic emulsion was sprayed to fix them to form a granite pattern. . A swelling reproduction test was conducted in the same manner as in Example 1. The results are summarized in Table 1.

Comparative Example 1 A wall covering material having a finished surface similar to that of Example 1 was produced as a prototype without using a polyester net, and a swelling reproduction test was conducted by the same method. The results are summarized in Table 1.

Comparative Example 2 A wall covering material having a finished surface similar to that of Example 2 was produced as a prototype without using a net made of nylon, and a swelling reproduction test was conducted by the same method. The results are summarized in Table 1.

Comparative Example 3 A wall covering material having a finished surface similar to that of Example 3 was produced as a prototype without using a glass net, and a swelling reproduction test was conducted by the same method. The results are summarized in Table 1.

[0017]

[Table 1]

Example 4 A flexible board (size 910 × 1820 mm, thickness 6 mm) was coated with a chloroprene rubber-based primer (manufactured by Sekaicho Co., Ltd., trade name: Everbond NP-2),
The same wall covering material as in Example 1, which was punched and cut to a size of 450 × 450 mm, was attached with a joint interval of 5 mm. This was exposed outdoors for one year and the swelling was observed. The results are summarized in Table 2.

Example 5 A wall covering material was attached to a flexible board in the same manner as in Example 4, and a one-component modified silicone-based sealing material (manufactured by Sekaicho Co., Ltd., trade name: Sekaicho Sealer M-) was attached to the joint portion. 1) packed. This was exposed outdoors for one year and the swelling was observed. The results are summarized in Table 2.

Comparative Example 4 The same wall covering material as in Comparative Example 1 which was punched and cut to a size of 450 × 450 mm was attached to a flexible board in the same manner as in Example 4, and exposed to the outdoors for one year to observe swelling. The results are summarized in Table 2.

[0021]

[Table 2]

[0022]

EFFECTS OF THE INVENTION As described above, the net composite adhesive rubber sheet-equipped wall covering material of the present invention is not only easy to install but also has an excellent effect that no swelling occurs after installation.

Claims (1)

[Claims] 1. A wall covering material with an adhesive rubber sheet, which is obtained by laminating a net made of fibrous material having a flat plate shape.